Agilent Technologies 8510XF Operating And Service Manual page 69

Conclusion
If all of the measured levels are at or above the minimum levels shown in
Figure 2-14, this indicates that the 8510XF is functioning normally, and is
ready to be used.
Table 2-14 Minimum Levels (All User Parameters)
Frequency Range (GHz)
<2
2 to <18
18 to <50
50 to <75
>75
NOTE: frequencies below 2 GHz are rolled off sharply, owing to the characteristics of the directional
couplers in the test heads.
Minimum Level (dBm)
−63
−38
−58
−61
−63
8510XF Network Analyzer Systems 2-41
Installation
System Operational Test